Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements

Ahmet Aydogan; Funda Akleman; Serkan Simsek

doi:10.23919/EuCAP.2017.7928595

Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements

Ahmet Aydogan, Funda Akleman, Serkan Simsek

Department of Electronics and Communication Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Citation (Scopus)

Abstract

In this study, complex permittivity of arbitrarily shaped homogenous materials loaded in different shaped waveguides (rectangular waveguide and circular waveguide) is determined through an iterative inverse algorithm. S-parameters are calculated for chosen material numerically via Method of Moments (MoM), in place of real measurement data for sake of testing algorithm as a first step. Inverse algorithm depends on calculating transmission-reflection coefficients (two port S-parameters) with respect to updated complex permittivity, started with an initial guess. At each step, calculated S-parameters (either S11 and/or S21) can be used to update complex permittivity in sense of Newton-Raphson numerical approach. Problem is reduced to finding the roots of iterative equation, which is a function of complex permittivity.

Original language	English
Title of host publication	2017 11th European Conference on Antennas and Propagation, EUCAP 2017
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	696-699
Number of pages	4
ISBN (Electronic)	9788890701870
DOIs	https://doi.org/10.23919/EuCAP.2017.7928595
Publication status	Published - 15 May 2017
Event	11th European Conference on Antennas and Propagation, EUCAP 2017 - Paris, France Duration: 19 Mar 2017 → 24 Mar 2017

Publication series

Name	2017 11th European Conference on Antennas and Propagation, EUCAP 2017

Conference

Conference	11th European Conference on Antennas and Propagation, EUCAP 2017
Country/Territory	France
City	Paris
Period	19/03/17 → 24/03/17

Bibliographical note

Publisher Copyright:
© 2017 Euraap.

Keywords

circular waveguide
complex permittivity determination
MoM
rectangular waveguide

Access to Document

10.23919/EuCAP.2017.7928595

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Aydogan, A., Akleman, F., & Simsek, S. (2017). Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements. In 2017 11th European Conference on Antennas and Propagation, EUCAP 2017 (pp. 696-699). Article 7928595 (2017 11th European Conference on Antennas and Propagation, EUCAP 2017). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/EuCAP.2017.7928595

Aydogan, Ahmet ; Akleman, Funda ; Simsek, Serkan. / Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements. 2017 11th European Conference on Antennas and Propagation, EUCAP 2017. Institute of Electrical and Electronics Engineers Inc., 2017. pp. 696-699 (2017 11th European Conference on Antennas and Propagation, EUCAP 2017).

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abstract = "In this study, complex permittivity of arbitrarily shaped homogenous materials loaded in different shaped waveguides (rectangular waveguide and circular waveguide) is determined through an iterative inverse algorithm. S-parameters are calculated for chosen material numerically via Method of Moments (MoM), in place of real measurement data for sake of testing algorithm as a first step. Inverse algorithm depends on calculating transmission-reflection coefficients (two port S-parameters) with respect to updated complex permittivity, started with an initial guess. At each step, calculated S-parameters (either S11 and/or S21) can be used to update complex permittivity in sense of Newton-Raphson numerical approach. Problem is reduced to finding the roots of iterative equation, which is a function of complex permittivity.",

keywords = "circular waveguide, complex permittivity determination, MoM, rectangular waveguide",

author = "Ahmet Aydogan and Funda Akleman and Serkan Simsek",

note = "Publisher Copyright: {\textcopyright} 2017 Euraap.; 11th European Conference on Antennas and Propagation, EUCAP 2017 ; Conference date: 19-03-2017 Through 24-03-2017",

year = "2017",

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doi = "10.23919/EuCAP.2017.7928595",

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series = "2017 11th European Conference on Antennas and Propagation, EUCAP 2017",

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Aydogan, A, Akleman, F & Simsek, S 2017, Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements. in 2017 11th European Conference on Antennas and Propagation, EUCAP 2017., 7928595, 2017 11th European Conference on Antennas and Propagation, EUCAP 2017, Institute of Electrical and Electronics Engineers Inc., pp. 696-699, 11th European Conference on Antennas and Propagation, EUCAP 2017, Paris, France, 19/03/17. https://doi.org/10.23919/EuCAP.2017.7928595

Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements. / Aydogan, Ahmet; Akleman, Funda ; Simsek, Serkan.
2017 11th European Conference on Antennas and Propagation, EUCAP 2017. Institute of Electrical and Electronics Engineers Inc., 2017. p. 696-699 7928595 (2017 11th European Conference on Antennas and Propagation, EUCAP 2017).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Akleman, Funda

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N2 - In this study, complex permittivity of arbitrarily shaped homogenous materials loaded in different shaped waveguides (rectangular waveguide and circular waveguide) is determined through an iterative inverse algorithm. S-parameters are calculated for chosen material numerically via Method of Moments (MoM), in place of real measurement data for sake of testing algorithm as a first step. Inverse algorithm depends on calculating transmission-reflection coefficients (two port S-parameters) with respect to updated complex permittivity, started with an initial guess. At each step, calculated S-parameters (either S11 and/or S21) can be used to update complex permittivity in sense of Newton-Raphson numerical approach. Problem is reduced to finding the roots of iterative equation, which is a function of complex permittivity.

AB - In this study, complex permittivity of arbitrarily shaped homogenous materials loaded in different shaped waveguides (rectangular waveguide and circular waveguide) is determined through an iterative inverse algorithm. S-parameters are calculated for chosen material numerically via Method of Moments (MoM), in place of real measurement data for sake of testing algorithm as a first step. Inverse algorithm depends on calculating transmission-reflection coefficients (two port S-parameters) with respect to updated complex permittivity, started with an initial guess. At each step, calculated S-parameters (either S11 and/or S21) can be used to update complex permittivity in sense of Newton-Raphson numerical approach. Problem is reduced to finding the roots of iterative equation, which is a function of complex permittivity.

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Aydogan A, Akleman F , Simsek S. Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements. In 2017 11th European Conference on Antennas and Propagation, EUCAP 2017. Institute of Electrical and Electronics Engineers Inc. 2017. p. 696-699. 7928595. (2017 11th European Conference on Antennas and Propagation, EUCAP 2017). doi: 10.23919/EuCAP.2017.7928595

Determination of complex permittivity of arbitrarily shaped homogenous materials via waveguide measurements

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